I'd like to think it's not something that I'd have done, but I'm not sure I'm prepared to call these people "morons".
Some of them will be very literally heavily invested in plans that they've made because the State told them it was appropriate to do so. Travel, food, accommodation costs will have been incurred in advance. They were then given a matter of hours (in reality, one or two in many if not most cases - not eight) to try to work out what their alternatives now were and how they were going to fund them.
We could have reassured them about the viability of alternatives and that they weren't going to be left not knowing where they were going to sleep or what they were going to eat and how much it was going cost them.
We could have made sure that public transport was managed to deal better with any wave of departures, if we weren't going to prevent it.
These are the sorts of things it's reasonable to expect of our governments.